Road-scraper.



G. OSBORNE.

ROAD SCRAPER.

APPLICATION FILED APR. 18. l9l6.

Patented July 23, 1918 INVENTOH ATTORNEY WIT ESSES GEORGE OSBORNE, 0FCUTLER, WISCONSIN.

ROAD-SCRAPER.

Specification of Letters Patent.

Patented July 23, 1918.

Application filed April 18, 1916. Serial No. 91,966.

To all whom it may concern:

Be it known that I, Gnonon OSBORNE, a citizen of the United States,residing at Cutler, in the county of Juneau and State of Wisconsin, haveinvented certain new and useful Improvements in Road-Scrapers, of whichthe following is a specification.

This invention relates to road scrapers and the primary object of theinvention is to provide a road-scraper that will obviate the smallridges and furrows which occur Where the ordinary road scraper isemployed and which will contain means for adjusting an auxiliary scraperblade carried by the device whereby a smooth and even road-bed may beformed by the scraper.

A further object of this invention is the provision of a road scraperwhich consists of comparatively few parts and is simple in construction,but durable and well adapted to withstand the rough usage to whichdevices of this character are ordinarily subjected.

For a full description of the invention and the advantages and meritsthereof, reference is to be had to the following descrip tion and theaccompanying drawings, wherein is illustrated the preferred form of myinvention, in which;

Figure 1 is a perspective view of the road scraper.

Fig. 2 is a fragmentary side elevation showing the cutting blade in oneposition in full line and in another position in dotted lines.

The front scraper 1 and the rear scraper 2 are preferably formed of woodand are spaced apart in parallel relation to each other and are adaptedto have their scraping edges lie on the ground in the same horizontalplane. Supporting bars 3 are provided which are bent at right angles attheir ends to provide securing flanges 4: which are fastened to thescrapers by means of rivets or bolts. The spacing bars 3 are connectedto the scrapers adjacent the ends thereof and are provided intermediatetheir ends with brackets 5. An auxiliary scraper blade 6 is arrangedbetween the front and rear scrapers and is transversely curved andprovided with a cutting edge 7. Attached to the scraper blade 6 at therear thereof is an arcuate supporting arm 8 which is provided with aplurality of apertures 9 through which a bolt 10, carried by the bracket5, is extended and secured to the supporting arm by the nut which isscrew threadedly mounted on the end of the bolt 10. The cutting blade 6is, by this construction, adapted to be adjusted so that the cuttingedge 7 may be disposed forwardly to a greater distance and at a greaterangle for more effectively operating on roads of different grades.

It has been found by experience that the ordinary scraper consisting offront and rear scrapers does not thoroughly even the road-bed inasmuchas the small ridges are left by the front scraper and passed over by therear scraper and it is to obviate this defect that the auxiliary scraperblade 6 is provided. When the center blade strikes the ridge in theroad-bed the entire weight of the device is upon the cutting edge of thescraper blade and the ridge will thereby be removed and the following orrear scraper will smooth over the ridge after it has been cut by theauxiliary scraper blade.

Any suitable device for pulling the scraper may be employed and for thepurposes of illustration, 1 have shown a staple 11 secured to the frontscraper to which are connected the draft chains 12 connected at theirfree ends by a ring 13 to which the draft animals for pulling the deviceare attached.

From the foregoing it will be observed that a very simple and durableroad scraper has been provided, the details of which embody thepreferred form. I desire it to be understood however, that slightchanges or modifications in the minor details of construction may bemade without departing from the spirit of the invention or the scope ofthe claim hereunto appended.

I claim:

In a road scraper, the combination of front and rear scraper blades,supporting bars having securing flanges fastened to the proximatesurfaces of the said scraper blades, brackets mounted upon the saidsupporting bars intermediate their ends, an

rality 0? equally spaced vapertures and enarm for permitting adjustmentand swinggaged wlth the edges oi: thesaid supporting 111g movement ofthe Sitld. auxiliary blade. 1

bars and With the said bracket for pre-. In testimony whereof I afiix mysignature venting longitudinal movement of the said in presence of twowitnesses.

auxiliary scraper blade, and a removable GEORGE OSBORNE. fasteningelement carried by each bmcket XVitnesses:

and adapted for reception in any of the ALVIN J. GRAB,

said openings in the adjacent supporting i M E SOHUMANN.

we at of this patent may becbtalned for five cents each, byaddressingthe Commissioner of Patents,

Washington, D. 0.

